Metal-pump.



H. F. BECHMAN.

METAL PUMP.

APPLICATION FILED DEC. 24'. I913.

Patented June 25,1918.

HENRY F. JBECEEMAN, OF BATTLE CREEK, MICHIGAN, ASSIGNOR T0 DUPLEX PRINTING- JPRIIESS COMPANY, OF BATTLE CREEK, MICHIGAN, A CORPORATION OF MICHIGAN.

METAL-PUMP.

To all whom it may-concern: Be it known that I, HENRY F. BEGHMAN, a citizen of the UnitedStates, residing at Battle Creek, in the county of Calhoun and State of Michigan, hav invented certain new and luseful Improvements in Metal- Pumps; and l hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part specification.

This invention relates to metal umps particularly such as are used by type ounders and stereotypers for pumping molten typemetal, and its objectis to provide a pump which can be operated with much less manual labor than is required by the present metal.

Within the pot A is arranged a pump'cylinder 1 that is preferably open at its lower.

known pumps; and the-invention consists in the novel construction and combination of parts hereinafter claimed and described in "detail withreference to the accompanyingdrawings in which lFigure'l is a top plan view of the pump in position within a melting pot.

Fig. 2 is a sectional view of a melting pot showing the pump in elevation.

Fig. 3 is a detail.

The melting pot A, which may be of ordinary construction and mounted on top of a furnace B in the usual manner, is adapted to contain a large quantity of molten type end but closed at top except for a small outlet opening which is connected with a discharge pipe 1 by which the molten metal can be directed out of the chamber intoa stereotype casting box, or other suitable re-.

ceptacle. This pump cylinder '1 may be rigidly connected to and suspended from a bracket l 'which has an arm'l fastened to the top of the pot by bolts 1 or anyother suitable means.

The pump piston 3 is adapted to fit easily within the pump cylinder and is rigidly connected to a piston rod 3 that extends through a suitable opening in the upper end of the pump cylinder, and its upper end is guided in a sleeve 4: attached to a bracket casting 4, which is shown as secured to the bracket 1 by means of bolts 4. In the normal position of the parts the pump piston 3 lies below and outside'of the pump cylinder Specification of Letters Patent.

Application filed December 24, 1913. Serial No. 808,570.

of this therein out through the pipe 1.

' and the latter is filled with metal from below, so that dross and slag are excluded ,..from the cylinder.

The bracket 4 is provided with horizontal bearings 4 for a shaft 5, which shaft has on its inner end a gear 5, adapted to mesh with arack 3 on the upper end of the piston rod 3 which rack may be formed by cutting teeth in the side of therod as indicated in Fig. 3. The sleeve 4 preferably hasan opening 41 in its side to permit direct engagement of the gear 5 with the rack 3",

I while the sleeve 4 and bearing 4 are practically integral and close together. On the outer end of the shaft *5. is a crank 6 by which the shaft 5- may be turned by hand.

When the shaft 5 is tunned in one direction the piston 3 will be lifted and enter the cylinder 1 and force the molten metal Any desired amount of metal can be discharged up to the full capacity of the pump cylinder.

Owing to the small diameter of the gear 5 as compared with the length of the crank 6 great leverage will be exerted to lift the piston 3 by a slight application of power to the handle 6%. In the example shown the ratio is about sixteen to one while on ordinary stereotyping pumps operated by levers the ratio is usually six-and-a-half to one,

therefore less than half the manual eifort is required to pump metal with my invention than is required with the ordinary lever "operated apparatus; and further by my pump the metal can be discharged quietly and uniformly instead of violently and sudin the cylinder; a rod connected with the.

piston and provided with gear teeth out therein; a second bracket mounted upon the first bracket adjacent the pump and provided with inner and outer bearings for a horizontal shaft and with a vertical sleeve.

Patented @llune 25, JWJW.

' adjacent the inner bearing for guiding the toothed portion of the piston rod, said sleeve also havingan opening in its side adjacent the inner bearing; a manually operable shaft mounted in said bearings; a pinion on the inner end of said shaft lying partly within the opening in said sleeve and engagingthe' teeth of the iston rod through said opening; and a discharge spout connected with said pump cylinder, substantially as (le- 10 scribed.

In testimony that I claim the foregoing as my own, I aifix my signature in presence of two Witnesses.

HENRY F. BECHMAN.

Witnesses:

IRVING K. STONE,

CHAS. A. GRAMES. 

